FAQ
I am trying to configure out distributed Hadoop setup but for some
reason my datanodes can not connect to the namenode.

2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 0 time(s).
2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 1 time(s).
2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 2 time(s).
2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 3 time(s).
2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 4 time(s).
2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 5 time(s).
2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 6 time(s).
2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 7 time(s).
2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 8 time(s).
2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying
connect to server: /10.101.102.11:9000. Already tried 9 time(s).
2010-09-06 04:06:14,048 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Call to /10.101.102.11:9000 failed on local exception:
java.net.NoRouteToHostException: No route to host

I also can't connect to master-hadoop:50070 or master-hadoop:50030 from
any other machine but the master/name node. Any ideas why this may be
happening?

Thanks.

Search Discussions

  • Harsh J at Sep 6, 2010 at 6:22 pm
    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark" wrote:

    I am trying to configure out distributed Hadoop setup but for some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030 from any
    other machine but the master/name node. Any ideas why this may be happening?

    Thanks.
  • Mark at Sep 6, 2010 at 6:27 pm
    Have any idea on what conf that may be? I am able to ssh into the
    namenode from the datanodes though.

    Looks like the name node is starting the web-server on 0.0.0.0. Is this
    something I should change?

    2010-09-06 03:13:12,599 INFO org.mortbay.log: Started
    SelectChannelConnector@0.0.0.0:50070
    2010-09-06 03:13:12,599 INFO
    org.apache.hadoop.hdfs.server.namenode.NameNode: Web-server up at:
    0.0.0.0:50070
    2010-09-06 03:13:12,600 INFO org.apache.hadoop.ipc.Server: IPC Server
    Responder: starting
    2010-09-06 03:13:12,600 INFO org.apache.hadoop.ipc.Server: IPC Server
    listener on 9000: starting
    2010-09-06 03:13:12,601 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 0 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 1 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 2 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 3 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 4 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 5 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 6 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 7 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 8 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 9 on 9000: starting


    On 9/6/10 11:21 AM, Harsh J wrote:
    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark"wrote:

    I am trying to configure out distributed Hadoop setup but for some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030 from any
    other machine but the master/name node. Any ideas why this may be happening?

    Thanks.
  • Ranjib Dey at Sep 6, 2010 at 6:29 pm
    no.. thats fine ,
    On Mon, Sep 6, 2010 at 11:57 PM, Mark wrote:

    Have any idea on what conf that may be? I am able to ssh into the namenode
    from the datanodes though.

    Looks like the name node is starting the web-server on 0.0.0.0. Is this
    something I should change?

    2010-09-06 03:13:12,599 INFO org.mortbay.log: Started
    SelectChannelConnector@0.0.0.0:50070
    2010-09-06 03:13:12,599 INFO
    org.apache.hadoop.hdfs.server.namenode.NameNode: Web-server up at:
    0.0.0.0:50070
    2010-09-06 03:13:12,600 INFO org.apache.hadoop.ipc.Server: IPC Server
    Responder: starting
    2010-09-06 03:13:12,600 INFO org.apache.hadoop.ipc.Server: IPC Server
    listener on 9000: starting
    2010-09-06 03:13:12,601 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 0 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 1 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 2 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 3 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 4 on 9000: starting
    2010-09-06 03:13:12,602 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 5 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 6 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 7 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 8 on 9000: starting
    2010-09-06 03:13:12,603 INFO org.apache.hadoop.ipc.Server: IPC Server
    handler 9 on 9000: starting



    On 9/6/10 11:21 AM, Harsh J wrote:

    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark"wrote:

    I am trying to configure out distributed Hadoop setup but for some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030 from
    any
    other machine but the master/name node. Any ideas why this may be
    happening?

    Thanks.
  • Ranjib Dey at Sep 6, 2010 at 6:27 pm
    ya, firewall is the most common issue. apart from that take a look at the
    namenode log too..just to make sure that its running without any error. try
    to ping the master-hadoop from the data node, to check if they are
    resolvable. If not try with the ip:50070
    On Mon, Sep 6, 2010 at 11:51 PM, Harsh J wrote:

    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark" wrote:

    I am trying to configure out distributed Hadoop setup but for some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030 from any
    other machine but the master/name node. Any ideas why this may be
    happening?

    Thanks.
  • Mark at Sep 6, 2010 at 6:33 pm
    pinging the master-hadoop from the datanode resolves fine however if I
    try to curl master-hadoop:50070 from the datanodes I get "curl: (7)
    couldn't connect to host"
    On 9/6/10 11:26 AM, Ranjib Dey wrote:
    ya, firewall is the most common issue. apart from that take a look at the
    namenode log too..just to make sure that its running without any error. try
    to ping the master-hadoop from the data node, to check if they are
    resolvable. If not try with the ip:50070

    On Mon, Sep 6, 2010 at 11:51 PM, Harsh Jwrote:
    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark"wrote:

    I am trying to configure out distributed Hadoop setup but for some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030 from any
    other machine but the master/name node. Any ideas why this may be
    happening?

    Thanks.
  • Mark at Sep 6, 2010 at 6:37 pm
    FYI I am running fedora 9. Anything I need to configure to allow access?
    On 9/6/10 11:33 AM, Mark wrote:
    pinging the master-hadoop from the datanode resolves fine however if
    I try to curl master-hadoop:50070 from the datanodes I get "curl: (7)
    couldn't connect to host"
    On 9/6/10 11:26 AM, Ranjib Dey wrote:
    ya, firewall is the most common issue. apart from that take a look at
    the
    namenode log too..just to make sure that its running without any
    error. try
    to ping the master-hadoop from the data node, to check if they are
    resolvable. If not try with the ip:50070

    On Mon, Sep 6, 2010 at 11:51 PM, Harsh Jwrote:
    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark"wrote:

    I am trying to configure out distributed Hadoop setup but for some
    reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode:
    java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030
    from any
    other machine but the master/name node. Any ideas why this may be
    happening?

    Thanks.
  • Mark at Sep 6, 2010 at 6:56 pm
    Nevermind. It was the default Fedora firewall that was configured.
    Disabled it and everything worked as it should.

    Thanks for the help
    On 9/6/10 11:36 AM, Mark wrote:
    FYI I am running fedora 9. Anything I need to configure to allow access?
    On 9/6/10 11:33 AM, Mark wrote:
    pinging the master-hadoop from the datanode resolves fine however if
    I try to curl master-hadoop:50070 from the datanodes I get "curl: (7)
    couldn't connect to host"
    On 9/6/10 11:26 AM, Ranjib Dey wrote:
    ya, firewall is the most common issue. apart from that take a look
    at the
    namenode log too..just to make sure that its running without any
    error. try
    to ping the master-hadoop from the data node, to check if they are
    resolvable. If not try with the ip:50070

    On Mon, Sep 6, 2010 at 11:51 PM, Harsh J<qwertymaniac@gmail.com>
    wrote:
    Mostly the conf or presence of a firewall. Sometimes wrong interface
    'listening'.

    On 6 Sep 2010 23:48, "Mark"wrote:

    I am trying to configure out distributed Hadoop setup but for
    some reason
    my datanodes can not connect to the namenode.

    2010-09-06 04:06:05,040 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 0 time(s).
    2010-09-06 04:06:06,041 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 1 time(s).
    2010-09-06 04:06:07,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 2 time(s).
    2010-09-06 04:06:08,042 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 3 time(s).
    2010-09-06 04:06:09,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 4 time(s).
    2010-09-06 04:06:10,043 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 5 time(s).
    2010-09-06 04:06:11,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 6 time(s).
    2010-09-06 04:06:12,044 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 7 time(s).
    2010-09-06 04:06:13,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 8 time(s).
    2010-09-06 04:06:14,045 INFO org.apache.hadoop.ipc.Client: Retrying
    connect
    to server: /10.101.102.11:9000. Already tried 9 time(s).
    2010-09-06 04:06:14,048 ERROR
    org.apache.hadoop.hdfs.server.datanode.DataNode:
    java.io.IOException: Call
    to /10.101.102.11:9000 failed on local exception:
    java.net.NoRouteToHostException: No route to host

    I also can't connect to master-hadoop:50070 or master-hadoop:50030
    from any
    other machine but the master/name node. Any ideas why this may be
    happening?

    Thanks.
  • Michael Robi at Oct 20, 2010 at 12:27 am
    Hi,

    I had this problem and after days of trying I found the answers in the new
    manual by Michael Noll. He uses different ports and small changes to the
    configuration file, it worked for me on the first try. This is where the
    manual is:

    http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster)

    Michael
    --
    View this message in context: http://lucene.472066.n3.nabble.com/Hadoop-distributed-mode-tp1428282p1735757.html
    Sent from the Hadoop lucene-users mailing list archive at Nabble.com.

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